Brake lights out

[SkiVT]

Brake lights stopped working. Pulled both brake switch plugs from pressure switches on Master and jumped green/blue to black/yellow. I have 12v on both sides with jumper, 12v at green/blue female without jumper, all with key on. Have 12v at fuse as well. The brake lights do not come on with jumper wire in place. However, when I turn on headlights, the brake lightbulb illuminates on that second filament. I pulled both brake light bulbs, top and bottom filaments appear to be solid, then re-installed the bulbs.

The many threads on this general issue point to the pressure switches being bad if the lights come on when jumpered. I have 12v when jumpered but no brake lights. I assume the running lights filament is on a different power circuit but the same ground so have not traced a ground. I am not clear on testing the brake light bulb socket to see if the 12v arrives from the switch jumpered in the frunk.

Any troubleshooting tips would be greatly appreciated.

[DRACO A5OG]

I say it is the light assembly, the ground may have come off or the ground at the bumper passenger side may be too corroded.

Everything up front sounds correct.

[Hoss911sc]

Get a test light and check for voltage at the two contacts in the tail light housing. Seems odd that both lights would fail at the same time but the contacts/bulbs get loose over time. If there's voltage, you need to either gently pull the contacts out to make better contact or add solder to the contacts on the bulbs and file to fit very snugly.

[SkiVT]

That did it. The contact points on bulbs were well worn. Pulled the contacts out slightly and used two new bulbs and the fit was way tighter. Both sides lit right up with the jumper. Plugged the pressure switches back in and all is good.

Thanks for the help.

[DRACO A5OG]

Uh oh, okay, you really need to pull the assembly, by pull on the two contacts you may have fractured the contact panel. It is liken to a computer's PC board, they are very brittle.